Richard Biener writes:
> On Fri, Jul 12, 2019 at 12:28 PM Richard Sandiford
> wrote:
>>
>> Richard Biener writes:
>> > On Fri, Jul 12, 2019 at 10:00 AM Richard Sandiford
>> > wrote:
>> >>
>> >> This change is needed to avoid a regression in gcc.dg/ifcvt-3.c
>> >> for a later patch. Without it,
On Fri, Jul 12, 2019 at 12:28 PM Richard Sandiford
wrote:
>
> Richard Biener writes:
> > On Fri, Jul 12, 2019 at 10:00 AM Richard Sandiford
> > wrote:
> >>
> >> This change is needed to avoid a regression in gcc.dg/ifcvt-3.c
> >> for a later patch. Without it, we enter CSE with a dead compariso
Richard Biener writes:
> On Fri, Jul 12, 2019 at 10:00 AM Richard Sandiford
> wrote:
>>
>> This change is needed to avoid a regression in gcc.dg/ifcvt-3.c
>> for a later patch. Without it, we enter CSE with a dead comparison left
>> by if-conversion and then eliminate the second (live) compariso
On Fri, Jul 12, 2019 at 10:00 AM Richard Sandiford
wrote:
>
> This change is needed to avoid a regression in gcc.dg/ifcvt-3.c
> for a later patch. Without it, we enter CSE with a dead comparison left
> by if-conversion and then eliminate the second (live) comparison in
> favour of the dead one.
This change is needed to avoid a regression in gcc.dg/ifcvt-3.c
for a later patch. Without it, we enter CSE with a dead comparison left
by if-conversion and then eliminate the second (live) comparison in
favour of the dead one. That's functionally correct in itself, but it
meant that we'd combine
